How would these gouges be removed?
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How would these gouges be removed?
There are deep scratch marks on my chain stay from a (previous owner's) dropped chain (pic below). I ground/sanded the high bulges, but the pits remain. How would one remove these? Would powder coating fill these in? They aren't super deep, but definitely noticeable.
Thanks!
Thanks!
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I'm assuming that is aluminum.
There is aluminum brazing which should work reasonably well.
Or welding?
There is aluminum brazing which should work reasonably well.
Or welding?
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There are high temperature powder coating friendly filler materials but why bother? Those marks are pretty small and not worth messing with in my opinion.
Last edited by Nessism; 07-12-21 at 08:10 AM.
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As often is the case I see and wish to comment on something else then the object in question. I see "U" brake mounts. Were I to rehab this frame I would strongly consider removing them (and their cable routing bits) and install seat stay bosses (and cable path bits). Andy (who has cut his hands on too many chainrings dealing with these stupid things)
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As often is the case I see and wish to comment on something else then the object in question. I see "U" brake mounts. Were I to rehab this frame I would strongly consider removing them (and their cable routing bits) and install seat stay bosses (and cable path bits). Andy (who has cut his hands on too many chainrings dealing with these stupid things)
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That's good to know. I think I'll ask my powder coating place. If it's not expensive, and they know how to do it, why not? It's there getting painted anyway.
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I think I would have the powder coater fill them. They might have done it without asking.
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You may be able to fill it with high temp filler. Tell your powder coater that you have done this or talk to them before doing it to see if they have recommendations. Usually, they will sandblast a frame before powder and that will remove the filler anyway. If it was in my shop, I'd float some silver over them and blend them in. Find a local jeweler at your local craft fair and see if they might be able to do this for you. Silver (56%) won't be affected by the heat from powder coating.
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Do you know if it will take sandblasting? My coater bakes items at 400" for an hour, then media blasts them, then coats and cures. He has a hard rule against non-metal fillers. Talk to them before you contract them. They don't want to disappoint you. They are craftspeople too.
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Definitely ask the powder coater before you do anything other than get someone to fill it with brazing material. That's what most of the regulars here would do, but if I couldn't do that myself, I'm fairly confident that a power coater can successfully fill the gouges for you.
#17
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As a frame builder and liquid wet painter, I'd do like Duanedr suggested and fill it with 45 or 56% silver (because that is what I have on hand). And then of course file and emery it smooth. It could be done with brass too but I'd rather use lower temperature silver.